Coenzymes are organic molecules derived from vitamins.
Indicate whether the statement is true or false
Q. 2The bulk of the absorption of amino acids occurs in the _____.
a. stomach
b. duodenum
c. ileum
d. jejunum
Q. 3Which statement is true?
a. Exercise greatly increases the micronutrient needs of athletes.
b. The protein needs of athletes are approximately 1.5 times those of nonathletes.
c. The diets recommended for athletes and nonathletes are similar.
d. The percentage of kcal from carbohydrate recommended by the Institute of Medicine is higher for athletes than nonathletes.
Q. 4Chemical reactions in metabolic pathways require hormones.
Indicate whether the statement is true or false
Q. 5The presence of small polypeptides and amino acids in the small intestine causes specialized cells there to release the hormone _____.
a. gastrin
b. pepsin
c. cholecystokinin
d. trypsin
Q. 6The increased production of _____ that results from training increases the oxygen-carrying capacity of the blood.
a. red blood cells
b. capillary blood vessels
c. white blood cells
d. endoplasmic reticula
Q. 7Catabolic pathways require energy to construct complex molecules from simpler ones.
Indicate whether the statement is true or false
Q. 8Protein-digesting enzymes are released as _____.
a. proenzymes
b. proteases
c. polypeptides
d. amino acids
Q. 9As a result of training, the expansion of _____ increases blood flow to muscle cells.
a. red blood cells
b. capillary blood vessels
c. white blood cells
d. endoplasmic reticula
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